proportional counter


Also found in: Thesaurus, Medical, Legal, Encyclopedia, Wikipedia.

proportional counter

n
(General Physics) an instrument for detecting and measuring the intensity of ionizing radiation. It is similar to a Geiger counter but operates at a lower potential difference such that the magnitude of the discharge is directly proportional to the number of gas molecules ionized by the detected particle. This may permit the identification of the particle or the determination of its energy
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.proportional counter - counter tube whose output pulse is proportional to number of ions produced
boron counter tube - a proportional counter tube for counting neutrons
counter tube - a measuring instrument for counting individual ionizing events
References in periodicals archive ?
Table 1 shows a comparison of results from FISCHERSCOPE X-RAY instruments fitted with a proportional counter tube, PIN diode and silicon drift detector (SDD), respectively.
The detector design, called a multi-wire proportional counter (MWPC), utilizes the suspension of multiple thin 6Li foils between anode banks to create a high-efficiency, large-area, low-cost, gas-filled neutron detector.
This is a factor of 50x better than can be achieved by the conventional proportional counter systems that are now commercially available.
The traditional version of the system features a proportional counter detection system and is optimum for standard coating thickness measurements (single layer, etc).
It is recommended proportional counter systems not be used for RoHS compliance measurements.
The XRD studies were carried out by diffraction Spectroscopy (Philips PW-1730) provided with a proportional counter PW-1050/70 z Goniometer, PW-1710 electronic filter and obtained spectrum matched with the standard sample.
For measurements in the low energy region proportional counter with Argon filled is used in geometry already described in an earlier investigation (Radhakrishna Murthy and Nageshwar Rao, 2005).
The Spectro Phoenix unit utilizes an x-ray tube as its source of excitation, and a proportional counter as its detection system.